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acme.js
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// Copyright 2018 AJ ONeal. All rights reserved
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
'use strict';
/* globals Promise */
var ACME = (module.exports.ACME = {});
ACME.formatPemChain = function formatPemChain(str) {
return (
str
.trim()
.replace(/[\r\n]+/g, '\n')
.replace(/\-\n\-/g, '-\n\n-') + '\n'
);
};
ACME.splitPemChain = function splitPemChain(str) {
return str
.trim()
.split(/[\r\n]{2,}/g)
.map(function (str) {
return str + '\n';
});
};
// http-01: GET https://example.org/.well-known/acme-challenge/{{token}} => {{keyAuth}}
// dns-01: TXT _acme-challenge.example.org. => "{{urlSafeBase64(sha256(keyAuth))}}"
ACME.challengePrefixes = {
'http-01': '/.well-known/acme-challenge',
'dns-01': '_acme-challenge'
};
ACME.challengeTests = {
'http-01': function (me, auth) {
var url =
'http://' +
auth.hostname +
ACME.challengePrefixes['http-01'] +
'/' +
auth.token;
return me._request({ url: url }).then(function (resp) {
var err;
// TODO limit the number of bytes that are allowed to be downloaded
if (auth.keyAuthorization === resp.body.toString('utf8').trim()) {
return true;
}
err = new Error(
'Error: Failed HTTP-01 Pre-Flight / Dry Run.\n' +
"curl '" +
url +
"'\n" +
"Expected: '" +
auth.keyAuthorization +
"'\n" +
"Got: '" +
resp.body +
"'\n" +
'See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4'
);
err.code = 'E_FAIL_DRY_CHALLENGE';
return Promise.reject(err);
});
},
'dns-01': function (me, auth) {
// remove leading *. on wildcard domains
return me
._dig({
type: 'TXT',
name: auth.dnsHost
})
.then(function (ans) {
var err;
if (
ans.answer.some(function (txt) {
return auth.dnsAuthorization === txt.data[0];
})
) {
return true;
}
err = new Error(
'Error: Failed DNS-01 Pre-Flight Dry Run.\n' +
"dig TXT '" +
auth.dnsHost +
"' does not return '" +
auth.dnsAuthorization +
"'\n" +
'See https://git.coolaj86.com/coolaj86/acme-v2.js/issues/4'
);
err.code = 'E_FAIL_DRY_CHALLENGE';
return Promise.reject(err);
});
}
};
ACME._getUserAgentString = function (deps) {
var uaDefaults = {
pkg: 'Greenlock/' + deps.pkg.version,
os:
'(' +
deps.os.type() +
'; ' +
deps.process.arch +
' ' +
deps.os.platform() +
' ' +
deps.os.release() +
')',
node: 'Node.js/' + deps.process.version,
user: ''
};
var userAgent = [];
//Object.keys(currentUAProps)
Object.keys(uaDefaults).forEach(function (key) {
if (uaDefaults[key]) {
userAgent.push(uaDefaults[key]);
}
});
return userAgent.join(' ').trim();
};
ACME._directory = function (me) {
return me._request({ url: me.directoryUrl, json: true });
};
ACME._getNonce = function (me) {
if (me._nonce) {
return new Promise(function (resolve) {
resolve(me._nonce);
return;
});
}
return me
._request({ method: 'HEAD', url: me._directoryUrls.newNonce })
.then(function (resp) {
me._nonce = resp.toJSON().headers['replay-nonce'];
return me._nonce;
});
};
// ACME RFC Section 7.3 Account Creation
/*
{
"protected": base64url({
"alg": "ES256",
"jwk": {...},
"nonce": "6S8IqOGY7eL2lsGoTZYifg",
"url": "https://example.com/acme/new-account"
}),
"payload": base64url({
"termsOfServiceAgreed": true,
"onlyReturnExisting": false,
"contact": [
"mailto:cert-admin@example.com",
"mailto:admin@example.com"
]
}),
"signature": "RZPOnYoPs1PhjszF...-nh6X1qtOFPB519I"
}
*/
ACME._registerAccount = function (me, options) {
if (me.debug) {
console.debug('[acme-v2] accounts.create');
}
return ACME._getNonce(me).then(function () {
return new Promise(function (resolve, reject) {
function agree(tosUrl) {
var err;
if (me._tos !== tosUrl) {
err = new Error("You must agree to the ToS at '" + me._tos + "'");
err.code = 'E_AGREE_TOS';
reject(err);
return;
}
var jwk = me.RSA.exportPublicJwk(options.accountKeypair);
var contact;
if (options.contact) {
contact = options.contact.slice(0);
} else if (options.email) {
contact = ['mailto:' + options.email];
}
var req = {
termsOfServiceAgreed: tosUrl === me._tos,
onlyReturnExisting: false,
contact: contact
};
if (options.externalAccount) {
// TODO is this really done by HMAC or is it arbitrary?
req.externalAccountBinding = me.RSA.signJws(
options.externalAccount.secret,
undefined,
{
alg: 'HS256',
kid: options.externalAccount.id,
url: me._directoryUrls.newAccount
},
Buffer.from(JSON.stringify(jwk))
);
}
var payload = JSON.stringify(req);
var jws = me.RSA.signJws(
options.accountKeypair,
undefined,
{
nonce: me._nonce,
alg: me._alg || 'RS256',
url: me._directoryUrls.newAccount,
jwk: jwk
},
Buffer.from(payload)
);
delete jws.header;
if (me.debug) {
console.debug('[acme-v2] accounts.create JSON body:');
}
if (me.debug) {
console.debug(jws);
}
me._nonce = null;
return me
._request({
method: 'POST',
url: me._directoryUrls.newAccount,
headers: { 'Content-Type': 'application/jose+json' },
json: jws
})
.then(function (resp) {
var account = resp.body;
if (2 !== Math.floor(resp.statusCode / 100)) {
if ('string' !== typeof account) {
account = JSON.stringify(account);
}
throw new Error(
'account error: ' +
resp.statusCode +
' ' +
account +
'\n' +
JSON.stringify(req)
);
}
me._nonce = resp.toJSON().headers['replay-nonce'];
var location = resp.toJSON().headers.location;
// the account id url
me._kid = location;
if (me.debug) {
console.debug('[DEBUG] new account location:');
}
if (me.debug) {
console.debug(location);
}
if (me.debug) {
console.debug(resp.toJSON());
}
/*
{
contact: ["mailto:jon@example.com"],
orders: "https://some-url",
status: 'valid'
}
*/
if (!account) {
account = { _emptyResponse: true, key: {} };
}
// https://git.coolaj86.com/coolaj86/acme-v2.js/issues/8
if (!account.key) {
account.key = {};
}
account.key.kid = me._kid;
return account;
})
.then(resolve, reject);
}
if (me.debug) {
console.debug('[acme-v2] agreeToTerms');
}
if (1 === options.agreeToTerms.length) {
// newer promise API
return Promise.resolve(options.agreeToTerms(me._tos)).then(
agree,
reject
);
} else if (2 === options.agreeToTerms.length) {
// backwards compat cb API
return options.agreeToTerms(me._tos, function (err, tosUrl) {
if (!err) {
agree(tosUrl);
return;
}
reject(err);
});
} else {
reject(
new Error(
'agreeToTerms has incorrect function signature.' +
' Should be fn(tos) { return Promise<tos>; }'
)
);
}
});
});
};
/*
POST /acme/new-order HTTP/1.1
Host: example.com
Content-Type: application/jose+json
{
"protected": base64url({
"alg": "ES256",
"kid": "https://example.com/acme/acct/1",
"nonce": "5XJ1L3lEkMG7tR6pA00clA",
"url": "https://example.com/acme/new-order"
}),
"payload": base64url({
"identifiers": [{"type:"dns","value":"example.com"}],
"notBefore": "2016-01-01T00:00:00Z",
"notAfter": "2016-01-08T00:00:00Z"
}),
"signature": "H6ZXtGjTZyUnPeKn...wEA4TklBdh3e454g"
}
*/
ACME._getChallenges = function (me, options, auth) {
if (me.debug) {
console.debug('\n[DEBUG] getChallenges\n');
}
return me
._request({ method: 'GET', url: auth, json: true })
.then(function (resp) {
return resp.body;
});
};
ACME._wait = function wait(ms) {
return new Promise(function (resolve) {
setTimeout(resolve, ms || 1100);
});
};
ACME._testChallengeOptions = function () {
var chToken = require('crypto').randomBytes(16).toString('hex');
return [
{
type: 'http-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/0',
token: 'test-' + chToken + '-0'
},
{
type: 'dns-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/1',
token: 'test-' + chToken + '-1',
_wildcard: true
},
{
type: 'tls-sni-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/2',
token: 'test-' + chToken + '-2'
},
{
type: 'tls-alpn-01',
status: 'pending',
url: 'https://acme-staging-v02.example.com/3',
token: 'test-' + chToken + '-3'
}
];
};
ACME._testChallenges = function (me, options) {
if (me.skipChallengeTest) {
return Promise.resolve();
}
var CHECK_DELAY = 0;
return Promise.all(
options.domains.map(function (identifierValue) {
// TODO we really only need one to pass, not all to pass
var challenges = ACME._testChallengeOptions();
if (identifierValue.includes('*')) {
challenges = challenges.filter(function (ch) {
return ch._wildcard;
});
}
var challenge = ACME._chooseChallenge(options, {
challenges: challenges
});
if (!challenge) {
// For example, wildcards require dns-01 and, if we don't have that, we have to bail
var enabled = options.challengeTypes.join(', ') || 'none';
var suitable =
challenges
.map(function (r) {
return r.type;
})
.join(', ') || 'none';
return Promise.reject(
new Error(
"None of the challenge types that you've enabled ( " +
enabled +
' )' +
" are suitable for validating the domain you've selected (" +
identifierValue +
').' +
' You must enable one of ( ' +
suitable +
' ).'
)
);
}
if ('dns-01' === challenge.type) {
// Give the nameservers a moment to propagate
CHECK_DELAY = 1.5 * 1000;
}
return Promise.resolve().then(function () {
var results = {
identifier: {
type: 'dns',
value: identifierValue.replace(/^\*\./, '')
},
challenges: [challenge],
expires: new Date(Date.now() + 60 * 1000).toISOString(),
wildcard: identifierValue.includes('*.') || undefined
};
var dryrun = true;
var auth = ACME._challengeToAuth(
me,
options,
results,
challenge,
dryrun
);
return ACME._setChallenge(me, options, auth).then(function () {
return auth;
});
});
})
).then(function (auths) {
return ACME._wait(CHECK_DELAY).then(function () {
return Promise.all(
auths.map(function (auth) {
return ACME.challengeTests[auth.type](me, auth);
})
);
});
});
};
ACME._chooseChallenge = function (options, results) {
// For each of the challenge types that we support
var challenge;
options.challengeTypes.some(function (chType) {
// And for each of the challenge types that are allowed
return results.challenges.some(function (ch) {
// Check to see if there are any matches
if (ch.type === chType) {
challenge = ch;
return true;
}
});
});
return challenge;
};
ACME._depInit = function (me, options) {
if ('function' !== typeof options.init) {
options.init = function () {
return Promise.resolve(null);
};
}
// back/forwards-compat
return ACME._wrapCb(
me,
options,
'init',
{ type: '*', request: me._request },
'null'
);
};
ACME._getZones = function (me, options, dnsHosts) {
if ('function' !== typeof options.getZones) {
options.getZones = function () {
return Promise.resolve([]);
};
}
var challenge = { type: 'dns-01', dnsHosts: dnsHosts, request: me._request };
// back/forwards-compat
challenge.challenge = challenge;
return ACME._wrapCb(
me,
options,
'getZones',
challenge,
'an array of zone names'
);
};
ACME._wrapCb = function (me, options, _name, stuff, _desc) {
return new Promise(function (resolve, reject) {
try {
if (options[_name].length <= 1) {
return Promise.resolve(options[_name](stuff))
.then(resolve)
.catch(reject);
} else if (2 === options[_name].length) {
options[_name](stuff, function (err, zonenames) {
if (err) {
reject(err);
} else {
resolve(zonenames);
}
});
} else {
throw new Error(
'options.' + _name + ' should accept opts and Promise ' + _desc
);
}
} catch (e) {
reject(e);
}
});
};
function newZoneRegExp(zonename) {
// (^|\.)example\.com$
// which matches:
// foo.example.com
// example.com
// but not:
// fooexample.com
return new RegExp('(^|\\.)' + zonename.replace(/\./g, '\\.') + '$');
}
function pluckZone(zonenames, dnsHost) {
return zonenames
.filter(function (zonename) {
// the only character that needs to be escaped for regex
// and is allowed in a domain name is '.'
return newZoneRegExp(zonename).test(dnsHost);
})
.sort(function (a, b) {
// longest match first
return b.length - a.length;
})[0];
}
ACME._challengeToAuth = function (me, options, request, challenge, dryrun) {
// we don't poison the dns cache with our dummy request
var dnsPrefix = ACME.challengePrefixes['dns-01'];
if (dryrun) {
dnsPrefix = dnsPrefix.replace(
'acme-challenge',
'greenlock-dryrun-' + Math.random().toString().slice(2, 6)
);
}
var auth = {};
// straight copy from the new order response
// { identifier, status, expires, challenges, wildcard }
Object.keys(request).forEach(function (key) {
auth[key] = request[key];
});
// copy from the challenge we've chosen
// { type, status, url, token }
// (note the duplicate status overwrites the one above, but they should be the same)
Object.keys(challenge).forEach(function (key) {
// don't confused devs with the id url
auth[key] = challenge[key];
});
var zone = pluckZone(options.zonenames || [], auth.identifier.value);
// batteries-included helpers
auth.hostname = auth.identifier.value;
// because I'm not 100% clear if the wildcard identifier does or doesn't have the leading *. in all cases
auth.altname = ACME._untame(auth.identifier.value, auth.wildcard);
auth.thumbprint = me.RSA.thumbprint(options.accountKeypair);
// keyAuthorization = token || '.' || base64url(JWK_Thumbprint(accountKey))
auth.keyAuthorization = challenge.token + '.' + auth.thumbprint;
// conflicts with ACME challenge id url is already in use, so we call this challengeUrl instead
auth.challengeUrl =
'http://' +
auth.identifier.value +
ACME.challengePrefixes['http-01'] +
'/' +
auth.token;
auth.dnsHost = dnsPrefix + '.' + auth.hostname.replace('*.', '');
auth.dnsAuthorization = ACME._toWebsafeBase64(
require('crypto')
.createHash('sha256')
.update(auth.keyAuthorization)
.digest('base64')
);
if (zone) {
auth.dnsZone = zone;
auth.dnsPrefix = auth.dnsHost
.replace(newZoneRegExp(zone), '')
.replace(/\.$/, '');
}
// for backwards/forwards compat
auth.challenge = auth;
auth.request = me._request;
return auth;
};
ACME._untame = function (name, wild) {
if (wild) {
name = '*.' + name.replace('*.', '');
}
return name;
};
// https://tools.ietf.org/html/draft-ietf-acme-acme-10#section-7.5.1
ACME._postChallenge = function (me, options, auth) {
var RETRY_INTERVAL = me.retryInterval || 1000;
var DEAUTH_INTERVAL = me.deauthWait || 10 * 1000;
var MAX_POLL = me.retryPoll || 8;
var MAX_PEND = me.retryPending || 4;
var count = 0;
var altname = ACME._untame(auth.identifier.value, auth.wildcard);
/*
POST /acme/authz/1234 HTTP/1.1
Host: example.com
Content-Type: application/jose+json
{
"protected": base64url({
"alg": "ES256",
"kid": "https://example.com/acme/acct/1",
"nonce": "xWCM9lGbIyCgue8di6ueWQ",
"url": "https://example.com/acme/authz/1234"
}),
"payload": base64url({
"status": "deactivated"
}),
"signature": "srX9Ji7Le9bjszhu...WTFdtujObzMtZcx4"
}
*/
function deactivate() {
var jws = me.RSA.signJws(
options.accountKeypair,
undefined,
{
nonce: me._nonce,
alg: me._alg || 'RS256',
url: auth.url,
kid: me._kid
},
Buffer.from(JSON.stringify({ status: 'deactivated' }))
);
me._nonce = null;
return me
._request({
method: 'POST',
url: auth.url,
headers: { 'Content-Type': 'application/jose+json' },
json: jws
})
.then(function (resp) {
if (me.debug) {
console.debug('[acme-v2.js] deactivate:');
}
if (me.debug) {
console.debug(resp.headers);
}
if (me.debug) {
console.debug(resp.body);
}
if (me.debug) {
console.debug();
}
me._nonce = resp.toJSON().headers['replay-nonce'];
if (me.debug) {
console.debug('deactivate challenge: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
return ACME._wait(DEAUTH_INTERVAL);
});
}
function pollStatus() {
if (count >= MAX_POLL) {
return Promise.reject(
new Error(
"[acme-v2] stuck in bad pending/processing state for '" +
altname +
"'"
)
);
}
count += 1;
if (me.debug) {
console.debug('\n[DEBUG] statusChallenge\n');
}
return me
._request({ method: 'GET', url: auth.url, json: true })
.then(function (resp) {
if ('processing' === resp.body.status) {
if (me.debug) {
console.debug('poll: again');
}
return ACME._wait(RETRY_INTERVAL).then(pollStatus);
}
// This state should never occur
if ('pending' === resp.body.status) {
if (count >= MAX_PEND) {
return ACME._wait(RETRY_INTERVAL)
.then(deactivate)
.then(respondToChallenge);
}
if (me.debug) {
console.debug('poll: again');
}
return ACME._wait(RETRY_INTERVAL).then(respondToChallenge);
}
if ('valid' === resp.body.status) {
if (me.debug) {
console.debug('poll: valid');
}
try {
if (1 === options.removeChallenge.length) {
options.removeChallenge(auth).then(
function () {},
function () {}
);
} else if (2 === options.removeChallenge.length) {
options.removeChallenge(auth, function (err) {
return err;
});
} else {
if (!ACME._removeChallengeWarn) {
console.warn(
'Please update to acme-v2 removeChallenge(options) <Promise> or removeChallenge(options, cb).'
);
console.warn(
"The API has been changed for compatibility with all ACME / Let's Encrypt challenge types."
);
ACME._removeChallengeWarn = true;
}
options.removeChallenge(
auth.request.identifier,
auth.token,
function () {}
);
}
} catch (e) {}
return resp.body;
}
var errmsg;
if (!resp.body.status) {
errmsg =
"[acme-v2] (E_STATE_EMPTY) empty challenge state for '" +
altname +
"':";
} else if ('invalid' === resp.body.status) {
errmsg =
"[acme-v2] (E_STATE_INVALID) challenge state for '" +
altname +
"': '" +
resp.body.status +
"'";
} else {
errmsg =
"[acme-v2] (E_STATE_UKN) challenge state for '" +
altname +
"': '" +
resp.body.status +
"'";
}
return Promise.reject(new Error(errmsg));
});
}
function respondToChallenge() {
var jws = me.RSA.signJws(
options.accountKeypair,
undefined,
{
nonce: me._nonce,
alg: me._alg || 'RS256',
url: auth.url,
kid: me._kid
},
Buffer.from(JSON.stringify({}))
);
me._nonce = null;
return me
._request({
method: 'POST',
url: auth.url,
headers: { 'Content-Type': 'application/jose+json' },
json: jws
})
.then(function (resp) {
if (me.debug) {
console.debug('[acme-v2.js] challenge accepted!');
}
if (me.debug) {
console.debug(resp.headers);
}
if (me.debug) {
console.debug(resp.body);
}
if (me.debug) {
console.debug();
}
me._nonce = resp.toJSON().headers['replay-nonce'];
if (me.debug) {
console.debug('respond to challenge: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
return ACME._wait(RETRY_INTERVAL).then(pollStatus);
});
}
return respondToChallenge();
};
ACME._setChallenge = function (me, options, auth) {
return new Promise(function (resolve, reject) {
try {
if (1 === options.setChallenge.length) {
options.setChallenge(auth).then(resolve).catch(reject);
} else if (2 === options.setChallenge.length) {
options.setChallenge(auth, function (err) {
if (err) {
reject(err);
} else {
resolve();
}
});
} else {
var challengeCb = function (err) {
if (err) {
reject(err);
} else {
resolve();
}
};
// for backwards compat adding extra keys without changing params length
Object.keys(auth).forEach(function (key) {
challengeCb[key] = auth[key];
});
if (!ACME._setChallengeWarn) {
console.warn(
'Please update to acme-v2 setChallenge(options) <Promise> or setChallenge(options, cb).'
);
console.warn(
"The API has been changed for compatibility with all ACME / Let's Encrypt challenge types."
);
ACME._setChallengeWarn = true;
}
options.setChallenge(
auth.identifier.value,
auth.token,
auth.keyAuthorization,
challengeCb
);
}
} catch (e) {
reject(e);
}
}).then(function () {
// TODO: Do we still need this delay? Or shall we leave it to plugins to account for themselves?
var DELAY = me.setChallengeWait || 500;
if (me.debug) {
console.debug('\n[DEBUG] waitChallengeDelay %s\n', DELAY);
}
return ACME._wait(DELAY);
});
};
ACME._finalizeOrder = function (me, options, validatedDomains) {
if (me.debug) {
console.debug('finalizeOrder:');
}
var csr = me.RSA.generateCsrWeb64(options.domainKeypair, validatedDomains);
var body = { csr: csr };
var payload = JSON.stringify(body);
function pollCert() {
var jws = me.RSA.signJws(
options.accountKeypair,
undefined,
{
nonce: me._nonce,
alg: me._alg || 'RS256',
url: me._finalize,
kid: me._kid
},
Buffer.from(payload)
);
if (me.debug) {
console.debug('finalize:', me._finalize);
}
me._nonce = null;
return me
._request({
method: 'POST',
url: me._finalize,
headers: { 'Content-Type': 'application/jose+json' },
json: jws
})
.then(function (resp) {
// https://tools.ietf.org/html/draft-ietf-acme-acme-12#section-7.1.3
// Possible values are: "pending" => ("invalid" || "ready") => "processing" => "valid"
me._nonce = resp.toJSON().headers['replay-nonce'];
if (me.debug) {
console.debug('order finalized: resp.body:');
}
if (me.debug) {
console.debug(resp.body);
}
if ('valid' === resp.body.status) {
me._expires = resp.body.expires;
me._certificate = resp.body.certificate;
return resp.body; // return order
}
if ('processing' === resp.body.status) {
return ACME._wait().then(pollCert);
}
if (me.debug) {
console.debug(
'Error: bad status:\n' + JSON.stringify(resp.body, null, 2)
);
}
if ('pending' === resp.body.status) {
return Promise.reject(
new Error(
"Did not finalize order: status 'pending'." +
' Best guess: You have not accepted at least one challenge for each domain:\n' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\n" +
JSON.stringify(resp.body, null, 2)
)
);
}
if ('invalid' === resp.body.status) {
return Promise.reject(
new Error(
"Did not finalize order: status 'invalid'." +
' Best guess: One or more of the domain challenges could not be verified' +
' (or the order was canceled).\n' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\n" +
JSON.stringify(resp.body, null, 2)
)
);
}
if ('ready' === resp.body.status) {
return Promise.reject(
new Error(
"Did not finalize order: status 'ready'." +
" Hmmm... this state shouldn't be possible here. That was the last state." +
" This one should at least be 'processing'.\n" +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\n" +
JSON.stringify(resp.body, null, 2) +
'\n\n' +
'Please open an issue at https://git.coolaj86.com/coolaj86/acme-v2.js'
)
);
}
return Promise.reject(
new Error(
"Didn't finalize order: Unhandled status '" +
resp.body.status +
"'." +
' This is not one of the known statuses...\n' +
"Requested: '" +
options.domains.join(', ') +
"'\n" +
"Validated: '" +
validatedDomains.join(', ') +
"'\n" +
JSON.stringify(resp.body, null, 2) +
'\n\n' +
'Please open an issue at https://git.coolaj86.com/coolaj86/acme-v2.js'
)
);
});
}
return pollCert();
};
ACME._getCertificate = function (me, options) {
if (me.debug) {
console.debug('[acme-v2] DEBUG get cert 1');
}
// Lot's of error checking to inform the user of mistakes
if (!(options.challengeTypes || []).length) {
options.challengeTypes = Object.keys(options.challenges || {});
}
if (!options.challengeTypes.length) {
options.challengeTypes = [options.challengeType].filter(Boolean);
}
if (options.challengeType) {
options.challengeTypes.sort(function (a, b) {
if (a === options.challengeType) {
return -1;
}
if (b === options.challengeType) {
return 1;
}
return 0;
});
if (options.challengeType !== options.challengeTypes[0]) {
return Promise.reject(
new Error(
"options.challengeType is '" +
options.challengeType +
"'," +
" which does not exist in the supplied types '" +
options.challengeTypes.join(',') +
"'"
)
);
}
}
// TODO check that all challengeTypes are represented in challenges
if (!options.challengeTypes.length) {
return Promise.reject(
new Error(
'options.challengeTypes (string array) must be specified' +
' (and in order of preferential priority).'
)
);
}
if (!(options.domains && options.domains.length)) {
return Promise.reject(
new Error(
'options.domains must be a list of string domain names,' +
' with the first being the subject of the domain (or options.subject must specified).'
)
);
}
// It's just fine if there's no account, we'll go get the key id we need via the public key
if (!me._kid) {
if (options.accountKid || (options.account && options.account.kid)) {
me._kid = options.accountKid || options.account.kid;
} else {
//return Promise.reject(new Error("must include KeyID"));
// This is an idempotent request. It'll return the same account for the same public key.
return ACME._registerAccount(me, options).then(function () {
// start back from the top
return ACME._getCertificate(me, options);
});
}
}
var dnsHosts = options.domains.map(function (d) {
return require('crypto').randomBytes(2).toString('hex') + d;
});
return ACME._depInit(me, options, dnsHosts).then(function (nada) {
if (nada) {
// fake use of nada to make both _wrapCb and jshint happy
}
return ACME._getZones(me, options, dnsHosts).then(function (zonenames) {
options.zonenames = zonenames;
// Do a little dry-run / self-test
return ACME._testChallenges(me, options).then(function () {
if (me.debug) {
console.debug('[acme-v2] certificates.create');
}
return ACME._getNonce(me).then(function () {
var body = {
// raw wildcard syntax MUST be used here
identifiers: options.domains
.sort(function (a, b) {
// the first in the list will be the subject of the certificate, I believe (and hope)
if (!options.subject) {
return 0;
}
if (options.subject === a) {
return -1;
}
if (options.subject === b) {
return 1;
}
return 0;
})
.map(function (hostname) {
return { type: 'dns', value: hostname };
})
//, "notBefore": "2016-01-01T00:00:00Z"
//, "notAfter": "2016-01-08T00:00:00Z"
};
var payload = JSON.stringify(body);
// determine the signing algorithm to use in protected header // TODO isn't that handled by the signer?
me._kty =
(options.accountKeypair.privateKeyJwk &&
options.accountKeypair.privateKeyJwk.kty) ||
'RSA';
me._alg = 'EC' === me._kty ? 'ES256' : 'RS256'; // TODO vary with bitwidth of key (if not handled)
var jws = me.RSA.signJws(
options.accountKeypair,
undefined,
{
nonce: me._nonce,
alg: me._alg,
url: me._directoryUrls.newOrder,
kid: me._kid
},
Buffer.from(payload, 'utf8')
);
if (me.debug) {
console.debug('\n[DEBUG] newOrder\n');
}
me._nonce = null;
return me
._request({
method: 'POST',
url: me._directoryUrls.newOrder,
headers: { 'Content-Type': 'application/jose+json' },
json: jws
})
.then(function (resp) {
me._nonce = resp.toJSON().headers['replay-nonce'];
var location = resp.toJSON().headers.location;
var setAuths;
var auths = [];
if (me.debug) {
console.debug(location);
} // the account id url
if (me.debug) {
console.debug(resp.toJSON());
}
me._authorizations = resp.body.authorizations;
me._order = location;
me._finalize = resp.body.finalize;
//if (me.debug) console.debug('[DEBUG] finalize:', me._finalize); return;
if (!me._authorizations) {
return Promise.reject(
new Error(
"[acme-v2.js] authorizations were not fetched for '" +
options.domains.join() +
"':\n" +
JSON.stringify(resp.body)
)
);
}
if (me.debug) {
console.debug('[acme-v2] POST newOrder has authorizations');
}
setAuths = me._authorizations.slice(0);
function setNext() {
var authUrl = setAuths.shift();
if (!authUrl) {
return;
}
return ACME._getChallenges(me, options, authUrl).then(
function (results) {
// var domain = options.domains[i]; // results.identifier.value
// If it's already valid, we're golden it regardless
if (
results.challenges.some(function (ch) {
return 'valid' === ch.status;
})
) {
return setNext();
}
var challenge = ACME._chooseChallenge(options, results);
if (!challenge) {
// For example, wildcards require dns-01 and, if we don't have that, we have to bail
return Promise.reject(
new Error(
"Server didn't offer any challenge we can handle for '" +
options.domains.join() +
"'."
)
);
}
var auth = ACME._challengeToAuth(
me,
options,
results,
challenge
);
auths.push(auth);
return ACME._setChallenge(me, options, auth).then(setNext);
}
);
}
function challengeNext() {
var auth = auths.shift();
if (!auth) {
return;
}
return ACME._postChallenge(me, options, auth).then(
challengeNext
);
}
// First we set every challenge
// Then we ask for each challenge to be checked
// Doing otherwise would potentially cause us to poison our own DNS cache with misses
return setNext()
.then(challengeNext)
.then(function () {
if (me.debug) {
console.debug('[getCertificate] next.then');
}
var validatedDomains = body.identifiers.map(function (ident) {
return ident.value;
});
return ACME._finalizeOrder(me, options, validatedDomains);
})
.then(function (order) {
if (me.debug) {
console.debug('acme-v2: order was finalized');
}
return me
._request({
method: 'GET',
url: me._certificate,
json: true
})
.then(function (resp) {
if (me.debug) {
console.debug(
'acme-v2: csr submitted and cert received:'
);
}
// https://github.com/certbot/certbot/issues/5721
var certsarr = ACME.splitPemChain(
ACME.formatPemChain(resp.body || '')
);
// cert, chain, fullchain, privkey, /*TODO, subject, altnames, issuedAt, expiresAt */
var certs = {
expires: order.expires,
identifiers: order.identifiers,
//, authorizations: order.authorizations
cert: certsarr.shift(),
//, privkey: privkeyPem
chain: certsarr.join('\n')
};
if (me.debug) {
console.debug(certs);
}
return certs;
});
});
});
});
});
});
});
};
ACME.create = function create(me) {
if (!me) {
me = {};
}
// me.debug = true;
me.challengePrefixes = ACME.challengePrefixes;
me.RSA = me.RSA || require('rsa-compat').RSA;
//me.Keypairs = me.Keypairs || require('keypairs');
me.request = me.request || require('@root/request');
me._dig = function (query) {
// TODO use digd.js
return new Promise(function (resolve, reject) {
var dns = require('dns');
dns.resolveTxt(query.name, function (err, records) {
if (err) {
reject(err);
return;
}
resolve({
answer: records.map(function (rr) {
return {
data: rr
};
})
});
});
});
};
me.promisify =
me.promisify ||
require('util').promisify /*node v8+*/ ||
require('bluebird').promisify /*node v6*/;
if ('function' !== typeof me.getUserAgentString) {
me.pkg = me.pkg || require('./package.json');
me.os = me.os || require('os');
me.process = me.process || require('process');
me.userAgent = ACME._getUserAgentString(me);
}
function getRequest(opts) {
if (!opts) {
opts = {};
}
return me.request.defaults({
headers: {
'User-Agent':
opts.userAgent || me.userAgent || me.getUserAgentString(me)
}
});
}
if ('function' !== typeof me._request) {
me._request = me.promisify(getRequest({}));
}
me.init = function (_directoryUrl) {
if (_directoryUrl) {
_directoryUrl = _directoryUrl.directoryUrl || _directoryUrl;
}
if ('string' === typeof _directoryUrl) {
me.directoryUrl = _directoryUrl;
}
if (!me.directoryUrl) {
me.directoryUrl =
'https://acme-staging-v02.api.letsencrypt.org/directory';
console.warn();
console.warn(
"No ACME `directoryUrl` was specified. Using Let's Encrypt's staging environment as the default, which will issue invalid certs."
);
console.warn('\t' + me.directoryUrl);
console.warn();
console.warn(
"To get valid certificates you will need to switch to a production URL. You might like Let's Encrypt v2:"
);
console.warn('\t' + me.directoryUrl.replace('-staging', ''));
console.warn();
}
return ACME._directory(me).then(function (resp) {
me._directoryUrls = resp.body;
me._tos = me._directoryUrls.meta.termsOfService;
return me._directoryUrls;
});
};
me.accounts = {
create: function (options) {
return ACME._registerAccount(me, options);
}
};
me.certificates = {
create: function (options) {
return ACME._getCertificate(me, options);
}
};
return me;
};
ACME._toWebsafeBase64 = function (b64) {
return b64.replace(/\+/g, '-').replace(/\//g, '_').replace(/=/g, '');
};
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